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NASA -- NASA Image Of The DayForest Change on New Ireland, Papau New Guinea: Image of the Day (2008)

Located north of Australia, the island nation of Papua New Guinea consists of the eastern half of mainland New Guinea (the western half of New Guinea Island is part of Indonesia) and numerous smaller islands to the east. Like many other tropical countries, the nation harbors large expanses of diverse tropical forests, from mountain forests to mangroves. In June 2008, scientists form the University of Papua New Guinea published the country's first detailed assessment of the type, extent, and health of Papua New Guinea's forests.

The scientists documented the wide-spread deforestation and degradation of lowland rainforest on the islands east of the mainland, including the island of New Ireland, shown here. This pair of natural-color images shows the impact of logging and forest fires on northwestern New Ireland in 2000 (top) compared to 1989 (bottom). In both images, intact tropical rainforests appear deep green, while plantations and degraded forest appear lighter green. The image from 1989 was captured by the Landsat 5 satellite, while the 2000 image is from Landsat 7. In 1989, clearing was restricted to a narrow rim at the coastline, but logging roads were already visible. Intensive logging took place on the island in the 1990s, and then in 1996, fires that began in the grassy and brushy areas near the coast invaded the logged forest and spread inland to intact forests, causing severe damage over a large area.

Transportation infrastructure, particularly roads and coastal shipping areas, makes some forests more accessible to loggers than others. Nearly 60 percent of the forests on the eastern islands of Papua New Guinea are accessible to logging, and by 2002, 63 percent of the accessible forests had been deforested or degraded. On the mainland, just under 30 percent less of the logging-accessible areas had been deforested or degraded. Those statistics may seem grim, but according to the Minister of Forests (in a letter published with the analysis), the report provided good news, too. Counting both intact and re-growing forests, just over 70 percent of the country is still forested, and if the country adopts more sustainable forestry and agricultural practices, forests can still be preserved and restored.

  • Shearman, P.L., Bryan, J.E., Ash, J., Hunnam, P., Mackey, B., Lokes, B. (2008). The State of the Forests of Papua New Guinea: Mapping the extent and condition of forest cover and measuring the drivers of forest change in the period 1972-2002. University of Papua New Guinea.
  • BBC. (2008, June 2). Images reveal ''rapid forest loss.'' Accessed June 6, 2008.

NASA image created by Jesse Allen, using Landsat data provided by the United States Geological Survey Earth Resources Observation and Science Data Center. Caption by Rebecca Lindsey.

This item is part of the collection: NASA Images

Identifier: ge_08842
Filename: newireland_etm_2000077.jpg
Creator: NASA -- NASA Image Of The Day
Date: 2008
Mediatype: image
Rights: Public Domain
Year: 2008
Publicdate: 2011-08-02 12:04:35
Addeddate: 2011-08-02 12:04:35
Language: English
Keywords: What -- Landsat 5; Where -- United States of America; What -- Landsat 7; What -- Landsat; What -- Earth; Where -- Australia; Where -- Papua New Guinea; Where -- Guinea; Where -- Indonesia; Where -- Ireland

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